Coal fuel analysis for horizontal boiler design

Hydrocarbon fuels are the major source of energy for power and process steam generation, and coal takes a major share in this. Horizontal Boiler furnace design will depend more on fuel characteristics, and further heat transfer surface sizing will depend on furnace outlet temperature.Today, the horizontal boiler manufacture,ZG will do analysis coal fuels for horizontal boiler design.uTjHorizontal boiler

Coal fuel analysis for horizontal boiler designuTjHorizontal boiler

Coal fuel analysis for horizontal boileruTjHorizontal boiler

The world's thermal power is mainly dependent on coal as its fuel. When designing a horizontal industrial boiler, fuel analysis plays a major role. The performance of the horizontal hot water boiler, and ultimately the entire unit, can change considerably if the coal being used is substantially different from that for which the horizontal boiler was designed.uTjHorizontal boiler

What is fuel?uTjHorizontal boiler

1.Any combination of organics and inorganic material which during chemical reaction or transformation gives out large amount of heat is called fueluTjHorizontal boiler
2.Fuel can be hydrocarbon fuel and non-hydrocarbonuTjHorizontal boiler
3.Industrial fuels have heat values from as low as 500 kcal/kg to as high as 11000 kcals/kguTjHorizontal boiler
4.Heat generated by fuel is used a boiler to generate steam for process, power generation, and a variety of other applications. The chemical characteristics of the fuel decide many aspects of horizontal steam boiler design. The boiler designed for gas fuel will have the smallest furnace size, and the boiler designed for coal will have the biggest size.uTjHorizontal boiler

Major effects of fuel on boiler design

1.A wide range of coal properties can lead to over-sized pulverizing/firing equipment which will in turn lead to a limitation on turn down and a possible increase in auxiliary power consumption. This will also increase the furnace size and the SH and RH will need to be sized properly, which can be difficult at times, to get the rated outlet temperature.uTjHorizontal boiler
2.Over-sizing of pulverize-rs and air heaters to handle occasionally high moisture coals will require excessive tempering air when handling normal moisture coals. Ultimately all these will result in higher gas outlet temperature, reducing the horizontal boiler efficiency.uTjHorizontal boiler
3.The behavior of the ash during the combustion process and managing the coal-ash are the major issues in horizontal industrial boiler design. Deposition and slagging, heat transfer upsets, and fouling in convection passages are some of the major issues to be dealt during operation of the boiler.uTjHorizontal boiler
4.Steam generator performance is greatly influenced by the coal/ash properties. Changes in coal property result in efficiency variation and the designer may not be able to demonstrate the guarantees. This can also result in changes in power consumption, load limitations, boiler availability loss due to slagging and fouling, tube failure increases, and plant heat rate reduction. There are known and unknowns with coal during combustion. The known are the coal Proximate, Ultimate, Calorific Value, HGI, and Ash analysis. The unknown are Petrographic analysis, Re-activity, Slagging and fouling analysis, etc. All unknown become known only after the combustion of coal in a horizontal boiler furnace and at the cost of boiler performance.uTjHorizontal boiler

Tag: horizontal boiler,Coal fuel analysis for horizontal boiler design,horizontal industrial boiler design

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